Fire-box, &amp;c.



J. M. MGCLELLON. FIRE BOX, (Km. APPLICATION FILED JUNE 1, 1911.

1, 1 1 1,267, Patented Sept. 22, 1914.

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J. M. MOGLELLON.

FIRE BOX, aw. APPLICATION FILED JUNE 1, 1911.

1, 1 1 1,267, Patented Sept. 22, 1914..

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Tocll'whom'it concern}- y Be it known that L-JAmnsM. MoCnnLLoN,

a citizen ofthe United States, and a resident a parts. 1

i ofEverett,in th'e county ofMiddlese xand Commonwealth of Massachusetts, have .1n-

vented an Improvement in Fire-.Boxes and other Structures,of which the following delscription, in :connection with the accompanying drawings, isa specificatiom'like characters on the -drawingsr presentmg like This"invention relates to locomotive fireb oxes", boilers: and other structures and 'more 'P c l ly;tc w usthereoe The character of heinv'ention may. be best understood by reference to the follow-. ingfdescriptio n of illustrative embodiments thereof shown in the accompanying drawings, whereinz a 1. n Figure 1is ahorizontal-sectionthrough a wall'illustratingan embodiment of th in vention; Fig. 2 is a verticalse'ction taken on Referrfng to the drawings with more particular reference to Figs." 1 and 2-, the; illus trative embodiment -of'the wall there shown comprises a vplurality f unitary, hollow, up-

, right sections 1 extending side by side transversely; tothelehgthof thewall,

To provide a wall which will be inextensibl'e andstable asa wholeyand at' thesame time Will be of suflicient local or "unit flexibility andexpansibility to expand and contract'in response to -variations in temperature Wltlh out buckling, straining orflwealiening the a wall, each section thereof is made topresent'a fiexible side or portion 3 conveniently curved, bulged or convexed in cross'sectional. shape at thelinner or fire-face of the walliiwr klh exteriorsides5 of the sections are not heated and's'train'ed to the same "extent "as the inner sides 3 and therefore do not need to beformed to: provide for the same curvature as do the inner side's; although they'lmay'be so formedfifdesired, or may, and preferably will be" formed to present curved sides as shown-0t less convexity than th ejfopposite or inner sides. 'Thesidesfof the; sections 1 connecting the curved sides 3 and 5, preferably areflattened. y i

In: my Patent No.:-963,627 dated July 5, 1910, is show'n' wall comprising a series of fiexion section's having their adj acent" walls secured together byrivets distribut'ed at' in- 'sp cificationjof Letters Patent at t 's t .22, 1 14 Applicaitipnfiled June 1, 1911. Serial No. 630,553.

tervals throughout their lengths. While this is a very advantageous construction, yet

it isnot always easy to have suflicient access to the rivets located midway between the ends of the sections to see that they are i properly placed and set: 1

An important feature of theinvention consists in providing each of the-flexion sections with inherent or independent stability in order that theyfmay maintain them'selves in proper position and relationship and be effective. as units of a complete and perma nent wall structure without the necessity of the rivets referred t0.:T this end there may be distributed atlintervals throughout the 1 length of each section stay means shown in Figs. 1 and 2 asstay' bolts 0r sleeves 7 contained within andextending transversely across and connecting-the flattened sides of asection. Thesestaysleeves are secured to' said sidesinv-sucha manner asvto prevent movement of'said sides in the direction of V :the length of the series of sections. VThe ends ofthe sleeves mayfbe threaded, exp'anded,lweldedor otherwise secured into apertures inthesides of the sections, the ends of the sleevesherein projecting slightly beyond the exterior faces "of s'aid sides where-they areuheaded over or "upset as shown at-9. To further secure the sleeves to said sides and prevent any possibility of leakageat their threaded connections to said sides, they may be welded to the latter'adjacenttheir upsetends. 7:

To permit adjoining sections to abut closely againstfone, another, the flattened sides thereof are provided with depressions -10receiv1ng said-upset ends of the stay sleeves and permitting said-ends to be flush with the sides "of the sections. The) stay sleeves, of course, would be applied before the sections are assembled into the wall; 7

1 To secure the sectionstogether and permit ready removal of a section for'purposesj of replacement or repair, there is provided Slllt able securingmeansshown in- F 1gs. l and 2 as common to said sections, said means-herewhere said tierod may receive suitable'holding, nuts or caps- 13 threaded thereon. ;By

this construction the rods maybe readily-in- .serted and removed and maybe heldfwith' in being in the form of a tie rod 11,of a 1' length sufficientito extend throughthe reg- "istering stay sleeves of the sections' a nd beyoncl the sides of the end sections *ofthe wall rection of its length.

any desired tightnessmerely by the adjust} ing of said nuts. The cap form of nutis dey sir-able since it completely incloses the threaded endof the tie'rodand protects the same from rust and presents a pleasing and.

finished appearance.

Preferably a tie rod will be provided at each stayed interval of a section, but at some intervals the tie rod may be" omitted, if desired. The tie rod may also project through plates located at the ends of the firebox or structure, if desired. WVhen the sections are assembled or connected by a tie. rod as described, adjacent ends of thestay i: sleeves preferably will abut and thereby, in

' effect, constitute a singlestayj means extending the length of the wall and will efl'ectu ally prevent extension of the wall .in the di- Referring now to Fig; the modification there shown comprises sections 8 similar in contour and general constructiontto those ShOWn'lIl Flgs. 1 and2, with the exception that instead of-' stay means comprismg.

' sleeves the stay means comprises solidstays I such as described, give the. section's. sufficient inherent strength to prevent any possibility of displacement of theiladjioiningside's thereof in the directionof the length of the wall and it is, therefore, unnecessary toprovide means for securing the sections. together distributed throughout the lengths of the sections, but'it is sufiicient to secure the upper and lower ends merely ofthe=sec-- tions together by rivets or other stable securing means not necessary to show herein.

'It is well known that pressure in acontainer tends to cause the Walls thereof to assume a shape of circular cross section. The. side of a sectionfacing the interior of the fire box maybe convexed or. curved to have'the shape which the pressure of-steam or other fluid in the section would tend to causesaid side to assume. pressure does not tend 'to distort said side,

" but' on the contrarytends to maintain it in itsoriginal shape. Bysimilar reasoning,the, exter or, sideofthe SeCtlOII tends to maintain its original shape. The opposed curved sides of a section, bytheir shape, are, therefore, self-sustaining. Where the adjacent sides ofthe sections are flattened; any pressure tending to-curve or distort said sides, isrendered ineffective by .the stays or corrugations distributed at intervals substantially throughout their lengths.

As a result this ltwill beunderstood that the inv'cntion is not only applicable to locomotive fire-boxes and boilers but alsoto other structures.

'Havi'ng described preferred embodiments of the invention without limiting the same thereto, what I claim as new and desire to secure Letters Patent, is:

1'. A structure of the class deSCI'lbd coin prising,"in' combination, a series of upright sections having portions flexible and selfsustaining transversely to the lengths of the sections, and flattenedeportions, and means inherent toeach section for preventing extension ;of,.its flattened portions-in the direc tion ofithelength of the series. r

Astructu're of the class described c omprising, in combination, a series of. upright sections having flexible-portions, each secs.

tion' having independent means for prevent ing itsnextension in they-direction oil-the, length of the series.

A structure of the class described comprising, in oombinationfa series; of upright, unitary sections, each having; meansconnecting opposite portions, thereof to localize flexion to. other- L.portions. j V, a.

4. YA structureIof: the class described com prising, in combinatioma series of upright sections having curved flexible portions and stays connectingpther portionsthereof and distributed :at. intervals in ,the. lengths} of said-sections.

l 5,. Astructureofthe class;

= prising, in combinatioinxafseries ofupr-i ht; unitary. wall sect ons having flexible v portrons' and means common: to "all; of; sa d secs:

tionsforseiouring theintogether. p 6'. A structnre'iofthe class described corn.

through" saidis'ectio'ns transversely, to ,the lengths. thereof for securing them together, ,7LA structurejof=the class,described comprising, .in combination, -;a seriesv ofeupright.

unitary flexion sections and a, tie rod common to saidsections for securing ithem to.-, gether. -i.

1 3;; A structurepf-the class described com-1 pr sing, in combination, a serles of upright tmltary sections,- a tie rod I common to;v said.

sections and means coiipcraltingfwith said tie rod "for securing said sections, together.

9. A structure of the "class described com-Q prising, in, combination, a series of upright flexion sections and; stay sleeves for securing,

tion of the length of" the sections 10. A structure ofithe class described-comesaid sections against extension in the- .dl'IGC.

; prising, in combination, a, series; of upright sections and stay sleeves;securedtoopposite' portions of said sections.

i 11. ,A structure of the class-described comprising, in combination, a seriesof upright fiex ion sections, stay sleeves extending trans.

versely of the latter, and a tiered, extend-l prising, fin combinatiomua series of upright unitary wall sections and means extending ing through said sleeves for securing said sections together. a

12. A structure of the class described comprising, in combination, a series of upright flexion sections, stays entered through apertures therein and having heads seated in depressions in said sections. a 13. A structure of the class described comprising, in combination, a series of upright flexion sections, and stays connecting opposite sides of eachv section, said stays being arlanged in alinement and having abutting en s.

14. A structure of the class described comprising, in combination, a'series ofupright flexion sections, hollow stays connecting opposite sides of each section, said stays being in registration and means extending through said stays forv securing said sections to: gether.

Copies of this patent may be obtained for five cents each, by addressing the Com a a Washington, D. O.

15. A structure of the class described comprising, in combination, a series of upright flexionsections arranged side-by-side, and transverse stays in each section connecting and projecting through oppositesides thereof and having enlarged ends seated in op posed depressions in said sections.

16. A structure of the class described comprising, in combination, a series of upright flexion sections, transverse stays projecting through sides thereof and having enlarged missioner of Patents, 

